The deepest sin against the human mind is to believe things without evidence.
If you want the present to be different from the past, study the past.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
Courage, conviction and confidence.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
Knowing others is wisdom, knowing yourself is Enlightenment.
A thought is an idea in transit.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
The most savage controversies are those about matters as to which there is no good evidence either way.
If there were no bad people, there would be no good lawyers.
Science is what we have learned about how to keep from fooling ourselves.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.
Real learning comes about when the competitive spirit has ceased.
The schools ain't what they used to be and never was.
The secret of life is not enjoyment but education through experience.
Any sufficiently advanced technology is indistinguishable from magic.
Those who fail to learn the lessons of history are doomed to repeat them.
The first idea the child must acquire is that of the difference between good and evil.
The whole of science is nothing more than a refinement of everyday thinking.